Factors univariately and multivariately (†,‡) associated with incidence of first repeat test and with incidence of an STI diagnosis (Chlamydia trachomatis and/or Neisseria gonorrhoea) at repeat testing in swingers at two Dutch STI clinics (South Limburg and Amsterdam, 2010–2013)
| Incidence of first repeat test | Incidence of STI | |||
|---|---|---|---|---|
| South Limburg | Amsterdam | South Limburg | Amsterdam | |
| Swinger characteristics§ | HR (95% CI) | HR (95% CI) | HR (95% CI) | HR (95% CI) |
| Age <45 | 1 | 1 | 1 | 1 |
| Age >45 | 1.21 (1.06 to 1.37 )**† | 0.98 (0.79 to 1.22) | 1.04 (0.65 to 1.66) | 1.10 (0.59 to 2.02) |
| Non-Dutch | 1 | 1 | 1 | 1 |
| Dutch | 0.85 (0.74 to 0.99)* | 1.16 (0.93 to 1.45) | 1.04 (0.59 to 1.85) | 0.78 (0.42 to 1.43) |
| Men (hetero) | 1 | 1 | 1 | 1 |
| Women (hetero) | 0.67 (0.51 to 0.90)**† | 0.89 (0.67 to 1.19) | 2.46 (0.95 to 6.34) | 1.01 (0.42 to 2.42) |
| Bisexual men | 1.92 (1.61 to 2.29)***† | 2.69 (1.81 to 4.02)***† | 1.99 (0.95 to 4.14) | 2.15 (0.83 to 5.58) |
| Bisexual women | 1.60 (1.37 to 1.88)***† | 1.51 (1.22 to 1.86)***† | 2.12 (1.08 to 4.18) | 0.85 (0.42 to 1.69) |
| Not paid for sex¶ | 1 | 1 | 1 | 1 |
| Paid for sex¶ | 1.61 (1.06 to 2.45)* | 1.20 (0.75 to 1.91) | 1.50 (0.78 to 12.53) | 1.56 (0.28 to 8.83) |
| <3 sex partners | 1 | 1 | 1 | 1 |
| ≥3 sex partners | 1.34 (1.13 to 1.59)** | NA | 1.05 (0.56 to 1.94) | NA |
| No symptoms | 1 | 1 | 1 | 1 |
| Symptoms | 0.74 (0.61 to 0.91)**† | 1.04 (0.86 to 1.27) | 1.60 (0.87 to 2.99) | 3.69 (2.12 to 6.42)***‡ |
| Not partner-notified | 1 | 1 | 1 | 1 |
| Partner-notified (contact tracing) | 0.93 (0.77 to 1.13) | 1.07 (0.81 to 1.41) | 3.24 (1.90 to 5.53)*** | 3.33 (1.86 to 5.98)***‡ |
| No STI at lag consultation | 1 | 1 | 1 | 1 |
| STI at lag consultation | 1.23 (0.99 to 1.52) | 2.05 (1.59 to 2.66)***† | 2.93 (1.36 to 6.31)**‡ | 1.10 (0.47 to 2.59) |
*p<0.05; **p<0.01, ***p<0.001 (all factors with p<0.05 are in bold).
†Independently associated with repeat testing in multivariate analyses. Adjusted HRs in South Limburg were 1.26 (1.11–1.43) for age, 0.69 (0.51–0.92) for women hetero, 1.91 (1.60–2.28) for bisexual men, 1.68 (1.43–1.98) for bisexual women and 0.77 (0.63–0.94) for symptoms. Adjusted HRs in Amsterdam were 2.34 (1.56–3.50) for bisexual men, 1.52 (1.23–1.88) for bisexual women and 1.97 (1.52–2.56) for previous STI.
‡Independently associated with STI in multivariate analyses. Adjusted HRs in Amsterdam were 2.80 (1.55–5.07) for partner-notified and 3.29 (1.88–5.76) for symptoms.
§When evaluating risk factors for repeat testing, characteristics are measured at the screening consultation; when evaluating risk factors for STI diagnosis, characteristics are measured at the current consultation (except previous STI).
¶Only in female swingers.
NA, not applicable.